Gurgel announced the withdrawal today on her Twitter account, citing a torn ACL as the issue.

“I just took an MRI of my knee yesterday and results came back; I completely tore my ACL,” Gurgel stated. “If it was up to me, I still was planning on fighting. I am able to still move forward and box, and I am very confident in that and my cardio, but doctor and coaches say ‘No way in hell!’ So it’s off to surgery hopefully soon and back to the training ASAP.”

Gurgel was expected to fight at Bellator 57, which takes place Nov. 12 at Casino Rama in Rama, Ontario, Canada. Her fight with Damm was expected to air on the evening’s main card.

Bellator officials have yet to announce if Damm will remain on the card.

Gurgel (formerly Zoila Frausto before her recent marriage to Strikeforce’s Jorge Gurgel) had been scheduled to rematch Jessica Aguilar at Bellator 57. The fighters met in the semifinal round of a season-three tournament, where Gurgel won a close split-decision victory. However, Aguilar was forced out of the contest fight with a foot injury.

Gurgel has not fought since March, when she scored a unanimous-decision victory over Karina Hallinan in a 125-pound non-title fight at Bellator 35. She’s now won six straight fights, which includes victories over notables Rosi Sexton and Megumi Fujii in earlier Bellator appearances.

Gurgel did not announce a timetable for her return but said she is eagerly anticipated a quick recovery.

“I know this will be difficult, never been off my legs for more than a few days, but I’m sure with good people and God by my side, I’ll get through it and shine once again in what I love to do under those big lights.”

As the UFC 189 tour made its last stop in Dublin, featherweight champ Jose Aldo was met with a torrent of abuse from the Irish fans. It might have been unpleasant, but it might also have been just what he needed.